Python

Propagation in Python

PythonStandard Library (Logging)Custom Loggersadvanced

What this snippet does

Log messages propagate up to the root logger by default, sometimes causing duplicate logs if handlers are attached at multiple levels.

Expected output

WARNING:app.child:Test

Why practise typing this

Typing standard library (logging) code builds muscle memory for the symbols and indentation Python uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

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